Auxiliary air supplying device for internal-combustion engines



July 8, 1952 F. BoYAN 2,602,435

AuxxLIARY AIR SUPPLYING DEVICE FOR INTERNAL-COMBUSTION ENGINES Filed may 2o, 195o Patented July 8, 1952 FFICE aUXiLIAar Ain SUPPL'YENG lne'v1citron t g IN'rEnNnL-oonnos'rioiu ENGINES Frank Boyan, Waterford, Wis.Y

'I Appiieanbn May zo, 195o, serial No; l163,239

rIhis invention relates to improvements devices for bettering the combustibility of gaseous charges delivered into the ring chambers oi the cylinders of internal combustion engines,4 having for an object to provide an auxiliary air inta-ke "for internal combustion engines, which, when installed in an engine, will Vfunction to materially improve the ring erliciency of carburated charge delivered into the cylinders thereof moreover, effect considerable `economies and savings in engine fuel consumption.

An equally important object ci the invention is to provide a simple, sturdy and comparatively cheaply produced device iy the stated character capable" of convenient andreadyI attachment to an internal combustion lengine without material change to or modification thereof, or its equipped charge 'forming device and which; in operation, will increase the efficiency of said chargefforming device mixture deliveredinto the engineintake manifold, especiallyby supplying rpredetermined or metered Aquantities of clean; pure air, or air entirely free of engine gas contamination or pollution to ksaid charge forming device' mixture.V f

lThe foregoing, aswell as kother objects, advantages'and meritorious teachings of my invention, will be in partA obvious and in part pointed out in the'following detailed 'disclosurethereof; when Vtaken in conjunction with the 'accompanying drawings, it jbeing understood thattheY form of the invention lpresented hereinfis precise and what is nowconsidered to `be the better mode of embodying its principles, Vbut that "other modifie cations Vand changes may be made ink specirio embodiments, without departing from its essential features.

In the drawings: f

Figure 1 is aside elevation of an internal `ccm'- bustion engine equipped with my invention.,A

Figure 2 is an enlarged' view, inverticalj sec:- tion, through 'my improved auxiliary'air supplying device, showingthe air supplying conduit connected to and communicating withan'internal combustion engine intake manifold/theV lat'- ter being fragmentarily shown partially in section and partially in elevation, and Af.

Figure 3 is a transverse section taken on 4the line 3-3' of Figure 2, looking in the' direction in which the arrows point. Referring in detail tok the' drawings, Irhave shown the invention attached to a form of internal combustion engine indicated in its entirety by the referencer letter M, provided with an intake manifold" I, an exhaust manifold E, acarburetor or other charge forming device C connected 3 Claims.V (Cl. 12S-119) 'to and communicating with the intake manifold,

andv an aircleaner A'. It is to be Iunderstood, however,` that the arubit of the invention is in no manner liinitedin its adaptationto" the engine M, but that the-same can be advantageously and operatively installed in -various other designsor types.

The improved auxiliary air intake device consists of a housing or tank i of suitable shape and size, havinga bracket 2 connected thereto whereby fixed mounting on an appropriate portion of the vengine M may be effected, as at 3:

The normally upper endl of the housing isv substantially closed and 'has a wayA therein into and through whichan air inletting tube 4 is snugly and longitudinally engaged andv similarly extended rsubstantiallycentrally lof said housing.

The outer and upper open end ofv thetube is preferably disposed for a distance above the housl ing while its inner and lower open end is arranged substantially flush with or, if desired, somewhat below the open lower end of the housing. Said air inl'etting tube is immovably secured to the walls of the way in the housing upper end'oi wall, as by welding or other suitable means.

A cup or `cap--like container 5 of horizontal cross-sectionalshape and size substantially lcorresponding to that of the housing I is provided for removable though secure engagement with the open lower end of the same. ferent forms of constructions ormeans for effecting such engagement may be employed, though in the elected embodiment the Ycup is formed with an upstanding and reduced ange 6 externally screw-threaded for turning engagement into and with a correspondingly screw-threaded portion of the housing open lower end (see Figure 2).

At this point, it is noted that said cup 5, when "engaged with the housing, as above described, is

substantially filled with a suitable air cleansing liquid, such las kerosene, water, etc., and that the open lower end of the air inletting tube d is immersed therein.

An outlet way is formed in a Wide Wall of the housingv l, preferably in proximity to its substantially closed upper end. Engaged in said out- 'let way is a conduit section 1 whose outer end is connected to yand communicates with one end of the now-way of a valve casing 8; the remaining end of such flow-Way having a second conduit i engaged therein. A tapered single way or ported plug valve 9 is rotatably seated in the valve casing and provided with a suitableoperating handle for an obvious purpose. Said tapered valve is adjustably retained in its seat in Of course, difthe casing by threadedly engaging a securing screw I with its lower end andvthrough an anchoring disc or plate Ill seated on the lower side of said casing over the adjacent end of its valve seat.

A check valve casing II is connected to and communicates with the outer end of the conduit section 1'; and as will be noted upon reference to Figure 2 of the accompanying drawings, has a suitable form of check valve Vmounted and/or seated therein, which may be of the swingable flap type such as indicated by the numeral I2, normally seated as illustrated but movable to an open or partially open position under suction urge applied thereto from the engine intake manifold I as presently described. If desired, the

check valve casing II may be provided with a clean out opening normally closed by a plug I3 or its equivalent.

A pipe section 'Ia is connected at one end to the outlet way or port of the check valve casy ing I l and is extended into engagement and communication with a tting or device I4 whose opposite ends connect and communicate with appropriate portions of the intake manifold I as is well shown in Figures 1 and 2 of the drawings.

In View of the above, it will be seen that with operation of the internal combustion engine M, a s-uction'will be set up and maintained in the intake manifold I. A portion of the suction will be exerted upon or applied to the s-ectional conduit line 'I-V-a, thus drawing air into the housingi of the auxiliary intake device via the air inletting tube 4, from its open lower end into and through the liquid I5 contained in the housing cup 5, following which the now cleansed air rises in and through the housing l in the direction indicated by the arrows .and discharges into said sectional conduit line for delivery into the intake manifold I, as above described, and ultimately admixed with the combustible charge recurrently delivered into the firing chambers of the cylinders of the internal lcombustion engine M.

The amount of air drawn into the intake manifold I from the improved auxiliary air intake device may, of course, be metered or regulated to a particularly required or desired amount and .by such predetermined supplying, it will be understood that a most effectual firing charge may be supplied to the engine cylinder firing chambers.

Of course, this regulation of air now or intake through my improved device ultimately to the engine cylinders is effected by turning the plug valve 9 in its seat in the casing 8 so as to regulate the size of passage or flow-way therethrough.

The check valve II-I2, obviously, permits of out-flowing of the auxiliary air supply into the intake manifold, but prevents any and all possible or back or reverse flowing of the same.

Atl this point, I desire that it shall be particularly noted that the sectional conduit 1, I and 'Ia has its internal diameter progressively reduced toward the engine intake manifold I. Ihave found that such progressive reduction of the internal diameter or flow-way of said sectional conduit line increases the degree of pressure under which the out-flowing of air from the conduit section la into the fitting I4 is effected,

-that such increase of pressure of the air discharged into said tting materially and advantageously improves its iiow from said fitting into the intake manifold and, quite as important, its thorough admixture or co-mingling with and/or dissemination in that combustible charge supplied to the engine intake manifold by the carburetor or charge forming device C, which as hereinbefore stated, has'its primary air supply provided thereto by or through the air cleaner A.

Air supplied or delivered to an engine intake manifold equipped with my improved auxiliary air supply device will be positively or thoroughly freed of any foreign or other matters harmful to the engine and/or its functioningf Manifestly, as and when the cleaning liquid I5 within the cup 5 becomes dirty, it may readily be removed and replaced with other, simply by disconnecting said cup 5 from the open lower end of the device housing I. Also, it may be here noted that according to atmospheric conditions, the amount of air flowing from the device housing I into and through the sectional conduit line 'I-I-'Ia will need appropriate regulation; this being readily and eiiiciently accomplished through adjustment of the aforesaid rotary plug valve 9.

I claim:

1. An auxiliary air supplying device for internal combustion engines, comprising a housing having inlet and outlet ways in the upper end portion thereof and its lower end op-en, an air inletting tube engaged through the way extended downwardly into the housing and opening thereinto, a fluid containing receptacle detachably connected to the lower open end of the housing receiving the lower end of said tube therein immersed in the fluid, a conduit having its internal diameter progressively reduced connected to and communicating with the housing outlet way, the remaining and internal diameter reduced end of said conduit connected to and directly communicating with the engine intake manifold, a metering valve interposed in said conduit, and a check valve interposed in the conduit beyond said metering valve.

2. An auxiliary air supplying device for internal combustion engines, comprising a housing having inlet and outlet ways in the upper portion thereof and its lower end open, an air inletting tube engaged through the inlet way eX- tended downwardly into the housing and opening thereinto in proximity to its lower open end, a fluid containing cup releasably connected to the lower open end of the housing receiving the open lower end of said tube therein, a conduit having itsv internal diameter progressively reduced connected to and communicated with the housing outlet way, a fitting having an internal Vdiameter greater than that of the outer end of said conduit and open at its opposite ends connected to and communicating with the engine intake manifold, said outer remaining internal diameter reduced end of said conduit connected to and directly communicating with said fitting intermediately of its opposite ends, a metering valve interposed in said conduit, and a check valve interposed in the conduit beyond said metering valve.

3. An auxiliary air supplying device for internal combustion engines, comprising ahousing having inlet and outlet ways in one end portion thereof and its opposite end portion open, an air inletting tube engaged through the inlet way extended into and longitudinally of the housing and discharging thereinto in proximity to its open end, a fluid containing receptacle detachably connected to said open end of the housing, receiving said open end of the air inletting tube therein, a conduit having its internal diameter progressively reduced connected to and communicating with the housing outlet way, the remaining and internal diameter reduced end of said conduit being connected and communicating with the engine intake manifold, a metering valve interposed in said conduit, and a check valve interposed in the conduit beyond said metering valve movable from its seat by the application of suction applied throughfrom the engine intake manifold.

FRANK BOYAN.

REFERENCES CITED The following references are of record in the file of this patent:

CII

Number Number UNITEDSTATES PATENTS Name Date Umbarger June 8, 1915 Keiier Jan. 18, 1916 De Clairmont July 3, 1917 Clayton July 6, 1920 Weiertz et al. Aug. 15, 1939 Shively Aug. 8, 1950 FOREIGN PATENTS Country Date France May 13, 1930 

